CVE-2025-47724 is a high-severity vulnerability identified in Delta Electronics' CNCSoft software, which is used in industrial control systems for CNC (Computer Numerical Control) machinery. The vulnerability is classified as CWE-787, an out-of-bounds write flaw, which occurs due to improper validation of user-supplied files. Specifically, when a user opens a maliciously crafted file within CNCSoft, the software fails to correctly validate the file contents, allowing an attacker to write data beyond the intended buffer boundaries. This memory corruption can lead to arbitrary code execution within the context of the current process. The CVSS 4.0 base score is 7.3, indicating a high severity level. The vector details show that the attack requires local access (AV:L), low attack complexity (AC:L), partial attack complexity (AT:P), high privileges (PR:H), and user interaction (UI:A). The vulnerability impacts confidentiality, integrity, and availability at a high level, with scope and security requirements also rated high. No known exploits are currently reported in the wild, and no patches have been released yet. The vulnerability was reserved in early May 2025 and published in June 2025, indicating recent discovery and disclosure. Given the nature of CNCSoft as industrial control software, exploitation could allow attackers to execute arbitrary code, potentially disrupting CNC machine operations or causing unsafe machine behavior.

For European organizations, especially those in manufacturing and industrial sectors relying on Delta Electronics CNCSoft for CNC machine control, this vulnerability poses significant risks. Exploitation could lead to unauthorized code execution, allowing attackers to manipulate machine operations, cause production downtime, or damage physical equipment. This could result in financial losses, safety hazards, and compromised operational integrity. Given the high privileges required, exploitation is more likely from insiders or attackers who have already gained elevated access, but the requirement for user interaction means phishing or social engineering could be vectors. The impact on confidentiality is moderate, but integrity and availability impacts are high, as malicious code could alter machine instructions or halt operations. Disruption in manufacturing supply chains in Europe could have broader economic consequences. Additionally, organizations subject to strict regulatory compliance (e.g., GDPR for data protection, NIS Directive for critical infrastructure) may face legal and reputational risks if the vulnerability is exploited.

Specific mitigation steps include: 1) Immediately restrict access to CNCSoft installations to trusted and authenticated personnel only, minimizing the risk of local exploitation. 2) Implement strict file handling policies, including disabling or restricting the opening of files from untrusted sources within CNCSoft. 3) Employ network segmentation to isolate CNCSoft systems from general IT networks, reducing exposure. 4) Monitor and audit user activities on CNCSoft systems to detect suspicious file openings or anomalous behavior. 5) Use application whitelisting and endpoint protection solutions capable of detecting anomalous code execution patterns within industrial control environments. 6) Coordinate with Delta Electronics for timely patch deployment once available; in the interim, consider virtual patching or compensating controls such as sandboxing file inputs. 7) Conduct user training focused on recognizing and avoiding malicious files and social engineering attempts. 8) Review and enhance incident response plans specific to industrial control system compromises. These measures go beyond generic advice by focusing on operational controls tailored to the industrial context and the specific attack vector involving malicious file handling.